Mixing-machine.



(awe-rags.

w m, u W W Patented July 10, 1917.

2 SHEETS-SHEET Z R. RADDATZ.

MIXING MACHINE.

. ,BJMM M 1f APPiICATION FILED MAR. |2| I909.

RICHnxtD RADIJATZ,

0F IVILILW'AUKEE, WISCONSIN, ASSIGNOR TO WHIRLPOOL MIXER &;

MACHINERY COMPANY, OF MIL'WAUKEE, WISCONSIN. A CORPORATION OF WIS- CONSIN.

MIXING-MACHINE.

ereon.

Application filed March 12, 1909.

To 0Z6 whom it may mun/3m n:

Ho it known that l'.']tu"n.\nn lliumrrz, a

citizen of the United, States, residing); at Mil- \vauluie, in the county of 'Milwaukee and fi-lialje of l v iseonsin, have invented certain new and useful lniprovements in l .-'lixingll'lacliines, of which the Following is a specillration, reference being; had to 'tl HCCUXU panying drawing, forming: a part thereof,

This invention relates to macnes f r mixing the constituents ol concrete and the like.

l.l .e'1nein objects oi? this invention are to ieiuler the (mtirc length of the drum and flights ellective and thus llli'ili we the cap-ac ity or. output of a machine of given rlimcxr sions; to provide l'or mounting and operating the drum close to the surface on which the machine stands, thereby avoiding elevation of the material for charging the drum; to facilitate discharging material from the drum; and generally to simplify and. im prove the construction and operation of mm chines of this class.

It consists in the GOKlSlJILlQtlOfi. arrangement and combinations of parts ashereinafter particularly described and defined in the claims.

In the accompanying d rawing like charm:-

ters designate the some "part-. in. the several figures. D

Figure 1 1s a side elevation ot a machine embodying the invention, :1 method of direct low charging being illustrated; Fig. 2 is an enlarged vertical longitudinal section ol. the same showing the reversible chute inposition to receive material from the ascending flights and deliver it back into the lower part of the drum toward the charging end thereof; 3 is :3. vertical cross seetionon the line 3 Fig. 2; and Fig. 4 is a section similar to that of Fig. 2 but showing a modification of the flights and the reversible chute in discharging position.

The machine comprises a truncated cone or frustunishaped ,drnm o, mounted with its axis inclined downwardly toward its smaller end in a frame 7), close to the ground, floor or surface upon which. the frame rests. The drum is provided with internal loogitudinal fii hts a, which may be attached to end rotate tiereiyith, or may be independntly supported and rotatable, while the drum is statioha-rily mounted on the frame.

Specification of Letters Patent.

Patented July 1), 1917.

Serial. N0. 482,%&

In the present case the drum is shown as rotatubly mounted upon the frame and the flights r: are flll'lll'lllll thereto. ll. may he conveniently constructed as shown in. Fig. 2. of a sheet metal. or boiler plate shell riveted at the ends to Hanged heads (Z and o of cast iron, the heads being annular or formed with central. openings to]: charging and discharging the inarhine.

The drum may he rotntahly carried as shown in Fig. '1 on rollers 7', which are m unted on the frau'rc l) and work with circular trends or ways 5/ l'ornnal on llie lll' lln luau-ls and v. The (I -um with its flights a e is turned in llu i'lirrrlion lIHllllll-Wl by arrows on the drawing. luy a hovel pinion l1, meshing with a rircular rack or rear ion the head r and fixed on a liorizoi'u'al shaft which is mounted at right angles to the axis ol. the drum in a slaud on the frame I). The drum is preferably hung or mounted in the frame 7) as shown, so that its lower side is inclined downwardly toward .itslarger or charging end, while the axis about which the drum rotates, inclines downwardly in the opposite direction toward its smaller or discharging end. i

A deflector or chute I: is carried by links I, and in connecting it with a bracket on the rear sill of the frame I) in such a way that it may be shifted from its working or mixing position in which it is shown in Fig. 2, to its discharging position in which it is shown in Fig. 45. or vice versa, itsinclination being reversed in changing it from one position to the other. i

A lever n fixed 0n the shaft or extended pivot pin 0 'on which the links mare mounted at their lower ends, afiords means for rocking said links and shifting the chute h from one position to the other.

The flights c'm'e curved upwardly on the eecendin side of the drum at their ends a jacent to the head 6 and terminate a short,

distance from said head, as shown in Fig. 2, to concentrate the discharge of material therefrom into the chute 7c and to 0 erate more effectively in mixing the nlateria In place however, of the curved flights, the machine may he provided with straight flights 0 extending completely to the head 6, as shown in Fig. l.

- For mixing certain materials, particularly those. of a sloppy nature, the drum is provide-d adjacent to the opening in the front end with an internal shield 7), which maybe of circular shape and fastened to the drum so as to turn with it. as shown in Fig. :2. or supported independently thereof by arms or braces passing from the frame. through the charging opening, as shown in Fig. l. in position to prevent the splaehing of the material through said openin".

This shield is located within the drum at a distance from the charging opening to ad-' mit of the introduction of material into the drum through said opening without changing the position of the shield.

To facilitate the transportation of the machine from place to place, the frame 1'; may he. provided with removahle or folding truck wheels. which are not show'n.

The machine may he charged as shown in Fig. l. by dumping the material into the drum through the opening in it: larger end from wheelharrows (,1 run up on a gradnall inclined plank r. resting on the trout sill ol' the frame 7). or the material to he mixed may he shm'eled directly into the drum. in this .way the labor and time required to elevate i the material to a higher level acc rding to common practice. are saved.

ln the operation of the marhinethe drum or flights being rotated in the dirertion'imlirated by arrows. and the chute A being Set in the position shown in Fig the material deposited in the lower'part. of the drum adjacent to the head J is taken up hy thcascend- Ting llights. 'lhe inclinat ion ot'the flights dur ing their ascent being reversed as the. result of the conical or t'ruslum shape of the drum. and the inclination of its axis. the material thus elevated gradually slides down toward the rear end of the machine and is dla trihuted along and diaeharged from the in ner edges of the flights. a part of it tailing inlothe. reveraely inclined chute il by which it is conveyed hack toward the front/of the machine into the lower part of the drum for further treatment. as explained. A part of the material elei'ated hy the tlighta'. falls theret'roindirectly hack into the lower part of the drum to he again taken up by the succeeding llights. the course of the material during the operation of mixing a hatch hein; approximately indicated by arrows in l igs. 2 and 3. In this manner the entire length of the drum and flights is brought. into etlertive action in mixing the material of'the'chal'ge or hatch. which is passed to and fro from one end oi" the drum to the other. elevated. turned upon itself andthoi ougldy and exl'iediliously mixed. After it has been thoroughly mixed the material is discharged while the drum or mixing mecha-- iiism continues to rotate. through the opening in the rear head, by tilting the-cluite K into the osition in which it is shown in Fig. 4, in w ich position it receives the mate of a frame. a, revoluble 'l'rustum-shaped drum mounted thereon with its axis inclined downwardly with respect to the horizontal. and the bottom of the drum inclined dmvnwardly in the opposite direetlon. the axis at the s-rnialler end of the drum heing lower than the axis at the, larger end of the drum. lmada provided witl'i suhstain liallj." central marging and discharging openings. respectively, partndly closing the ends of the drain, elevating flights on the interior of the drain extmiding lengthwise thereof and projm-tiisg in a generally radial 'lirertion toward the mile of the drum to elevate material and move it toward the smaller end of the dram. and means to re. ceive material elevated by the flights and return it toward the larger end of the drum.

.4. in a mixing machine. the combination of a frame. a revoluhle 'lriistiun-slmped drum mounted thereon with its axis inclined downwardly toward its smaller end and its lower side inclined downwardly toward its larger end, heads. provided vith substan tially central charging and discharging ope-nin s. respectively, partially closing the ends or the drum, and elevating flights on the interior of the drum extending lengthwine thereof, and projecting in a, gene-ralljr radial direction toward the axis of the drum to elevate material and move it toward the .more said material in. one direction, and a non-rotatahle member arranged to receive the material and passit back in the opposite direction for further movementreversely by the rotatable mixing means.

4. In a mixing machine the combination of a frame, a drum mounted thereqn with its axis inclined downwardly toward its smaller and discharging end. the inclination of said axis being such that the lower part. of the drum is inclined downwardly in the opposite. direction, said drum being provided on its interior with longitudinal flights and an in elined chute. adapted to discharge. material, dropped into it from flights, on to the lower part of the drun which is inclined doWnwardly away froni the discharge end of the drum. l i

5. In a mixing machine the combination revolulole frustuln-shaped of a tralne, a frustunrshapetl drmn rotatahly ll'lOlll'lt'Utl onsaid frame with its axisinrlined "downwardly with respect to the lun'izoutal. the axis at the smaller or discharge end of the drum being lower than the axis at. the larger or charging end oi the drum, but the inclination oi the axis with respect. to the horizontal being such that. the lower part of the drum is inclined in the opposite direction with respect tothe horizontal. and a chute downwardly inclined toward the larger end of the drum. adapted to receive material from ascei'uling flights and return it. toward the charging or larger end of the drum and on the inclined bottom oi the drum, and means for rotating said drum.

G. in a mixing machine the combination of a rotatable drum provided on the interior thereof with elcvatingflights which are all downwardly inclined on the ascending side of the drum toward the discharge end thereof, a chute, means exterior of the drum for supportil'lg said chute, and means for projecting said chute longitlulinally into said drum and inclining it so that material received thereon will be returned toward the opposite end of the drmn or withdrawing and reversing thd inclination of said chute so that material received thereon will be discharged outside the drum.

7. In a mixing machine the combination of a frame, a frustum shapedf drum rotatably mounted thereon with its axis inclined with respect to the horizontal, the axis at the smaller end of the. drum being lower than the axis at: the larger end of the drum, but the inclination of the axis with respect to the l'iorizontal'being such that the lower part of the drum is inclined with respect to thelmrizontal in the opposite di-= rection. said drum, being provided with internal longitudinal flights and heads partially closing the ends thereof but leaving sul'istantially central charging and discharging openings, a chute, a supportifor said. chute located outside of said drum, and

-n'iea'ns for projecting said chute into said drain tln'ough the discharge opening in the smaller end thereof. so that sa d chute may he nichned 111 sold drum in the same direc- 'tion as the bottom of the, drum is inclined,

so as to deliver material dropped into-said chute from the flights on to the inclined bottom oi the drum and in the direction ofits il'u'zlination, and for withdrawing said chute gtrom said drum. so that said chute may be 7 ing partially clo' oisaid drum.

S). :In a mixing machine the combination of a rotary l'rustuni-shaped drum having contracted openings in the ends and provide'il with internal longitudinal flights curved upwi'n'dlv at the -'ends adjacent to and terminating at a distance from the smaller end. of' the drum, and means for rotating the drum, the a xis of tl1e.drmn,boing inclined downward] y toward its smaller end.

.10. In a mixing machine the combination of a. l'ran'ie, a frustum-shaped drum rotah] mounted thereon wi nits axis inclined downwardly toward'i 'allcr end and hav nds with substantially central eharg .nd discharging openings, and internallongitudinal flights which are curred upwardly adjacent to the smaller end of the drum on the ascending side thereof, means for rotating said drum, and a reversible chute, adapted in one position to deliver material received from ascending flights hack into a lower part of the drum and in the other position to deliver such material outside of the drum through the opening in its smaller end.

1]. In a mixing machine the combination of a rotary drum provided with heads in which are. substantially; central charging-and discharging openings, said drum being provided with flights on the interior thereof to elevate material on the ascending side of the drum, means to discharge mate rial elevated by said flights back into the lower part of the drum toward the charg-' ing end thereof, and a shield located with in. said drum between the charging opening and the means for discharging material back into the lower part of, the drum, said shield beings 'iaccd from the drum so that free communication exists betweenparts of the drum on oppositesides of said shield, said shield being at least as large in diameter as the charging opening in the drum.

12. The combination in a mixing machine, 01 a rotatable drum, the lowenpart of which is inclined in one direction longitudinally, and flights arranged in said drum and lon- -gitudinally thcreofland inclined on the ascending side of the drum in the opposite direction to which the lower part of the drum is inclined so that n'iaterial lifted by said flights and retained thereon 'will tendto move on the flights toward one end of the rial within the drum is drum and when discharged from said flights onto the oppositely inclined lower part of the drum, will tend to move toward the other end of the drum, whereby the matecaused to circulate in a continual cycle from one end of the drum to the other end of the drum and back again.

of a rotatable drum provided with elevating. ights on the interior thereof, achute supported outside of said drum so that the are of movement of the chute will be concave downward, and means for moving said 13. The combination in a mixing machine I chute endwise more or less either into the drum or out of the same, said means being adapted to reverse the inclination of the chute during its endwise movement, and the chute being so mounted as to cause it to be inclined toward the bottom of the drum When occupying the innermost of its two positions.

In witness whereof I hereto ailix my signature in presence'of two witnesses.

RICHARD RADDATZ. Witnesses:

CHAS. L. Goss, ALICE E. Goes. 

